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Water for food security in arid zones of India
2002
Narain, P. | Khan, M.A. (Central Arid Zone Research Institute, Jodhpur (India))
Water is an essential recurring input for agriculture productivity and key to food security. Its availability in space and time has been a matter of great concern in many parts of the world. In India there is growing awareness about the scarcity of water under the increased water demand from agriculture and other sectors. Further, the projected reduction in water availability to the agriculture sector from the share of 89
显示更多 [+] 显示较少 [-]Ground water alimentation with water runoff from grassland rhizosphere under conditions of its diversifield use
2000
Misztal, A. (Instytut Melioracji i Uzytkow Zielonych, Falenty (Poland))
The paper presents lysimeter tests, which have been conducted since 1974 on the amount of water runoff from sodded soil profile under conditions of its diversified use and watering. On the tested area a major portion of the total yearly runoff from grasslands occurs during the growing season due to the amount and distribution of precipitation in this region (c.a. 68 of the total yearly precipitation falls during the growing season). Runoff values from grasslands recorded during the study period varied from 113.7 to 247.1 mm. A significant relationship has been found betwen the amount of water draining away from grassland soil profile and the amount of yield, which was caused either by a method of use (meadow, pasture or 8-15 cm high sward) or by the amount of applied nitrogen fertilization
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